A parameter that specifies the data repositories used in phone-related searches. It is both specified as part of the GET request and returned in the response data.

The returning source element will indicate if the phone number matched a specific database and may determine if the device used is a mobile phone or a landline phone.

One or more phone source codes can be supplied in the GET request, in order to narrow the search to specific databases.

Code

Name

Description

D

Landline Directory Assistance

Directory Assistance data collected daily from regional Bell phone companies and other sources. Approximately 90 million residential listings and 20 million business listings. Estimated connection rate: 90%. Updated daily.

P

Landline Premium

Premium Phone. Contains approximately 200 million residential listings and 20 million business listings compiled from phone companies and marketing data sources. Estimated connection rate. 70%. Updated quarterly.

C

Landline Compiled

Compiled Phone. Contains approximately 600 million residential listings and 55 million business listings compiled from historical Bell operating company listings and various marketing data sources. Estimated connection rate: 50%. Updated occasionally.

M

Mobile

Mobile Phone. Contains approximately 123 million residential mobile phone listings. Estimated connection rate: 50%. Updated quarterly.

E

Enhanced Mobile

Enhanced Mobile Phone: Contains approximately 2.3 billion current and historical listings from marketing and skip tracing sources. Estimated connection rate: 65%. Updated frequently.

L

Enhanced Landline

Enhanced Landline Phone: Contains approximately 2.3 billion current and historical listings from marketing and skip tracing sources. Estimated connection rate: 65%. Updated frequently.